/* ==========================================================
   CHICHENG 2026 — Complete Design System
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;600;700&family=Noto+Sans+SC:wght@300;400;500;700&family=Inter:wght@300;400;500;600&display=swap');

/* --- Design Tokens --- */
:root {
  --forest:   #080f0b;
  --moss:     #0f2018;
  --sage:     #1d3d2a;
  --fern:     #3a6b4a;
  --leaf:     #5a8a68;
  --cream:    #f2ece0;
  --sand:     #e5d9c4;
  --linen:    #f8f5ee;
  --ember:    #c44a10;
  --ember-lt: #e05a1a;
  --amber:    #b07820;
  --fog:      #6e6e60;
  --fog-lt:   #9a9a8a;
  --ink:      #0c1410;
  --white:    #ffffff;

  --font-serif: 'Noto Serif SC', Georgia, 'STSong', serif;
  --font-sans:  'Noto Sans SC', 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono:  'SF Mono', 'Consolas', monospace;

  --page-x:    clamp(1.25rem, 5vw, 5rem);
  --max-w:     1360px;
  --section-y: clamp(5rem, 9vw, 10rem);

  --h-display: clamp(3rem, 8vw, 7.5rem);
  --h1:  clamp(2.5rem, 5.5vw, 5.5rem);
  --h2:  clamp(2rem, 3.8vw, 3.75rem);
  --h3:  clamp(1.4rem, 2.2vw, 2.25rem);
  --h4:  clamp(1.15rem, 1.5vw, 1.5rem);
  --lead: clamp(1rem, 1.5vw, 1.25rem);
  --body: 1rem;
  --small: 0.875rem;
  --xs:   0.75rem;

  --r-sm:   4px;
  --r-md:   10px;
  --r-lg:   20px;
  --r-xl:   32px;
  --r-full: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-io:  cubic-bezier(0.45, 0, 0.55, 1);
  --dur-fast: 0.18s;
  --dur:      0.32s;
  --dur-slow: 0.56s;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.14);
  --shadow-xl:  0 24px 64px rgba(0,0,0,.18);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: var(--body);
  line-height: 1.7;
  color: var(--ink);
  background: var(--linen);
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; background: none; border: none; }
button { cursor: pointer; }
ul, ol { list-style: none; }

a:focus-visible,
button:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; border-radius: var(--r-sm); }

/* --- Utility --- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link {
  position: fixed; z-index: 999; top: 12px; left: 12px;
  padding: 10px 18px; border-radius: var(--r-full);
  background: var(--white); color: var(--ink);
  font-size: var(--small); font-weight: 700;
  transform: translateY(-160%);
  transition: transform var(--dur-fast) var(--ease-out);
  box-shadow: var(--shadow-md);
}
.skip-link:focus { transform: translateY(0); }

.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.5;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--page-x);
}
.section { padding-block: var(--section-y); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.cc-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  height: 72px;
  padding-inline: var(--page-x);
  color: var(--white);
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.cc-header.is-scrolled {
  background: rgba(8,15,11,.92);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.cc-header.is-open { background: rgba(8,15,11,.98); }

.cc-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-sans);
  font-weight: 800;
  text-decoration: none;
}
.cc-brand-mark {
  width: 40px; height: 40px;
  border-radius: var(--r-full);
  overflow: hidden;
  background: var(--cream);
  border: 1.5px solid rgba(255,255,255,.2);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.cc-brand-mark img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.6); }
.cc-brand-name { display: flex; flex-direction: column; gap: 0; line-height: 1; }
.cc-brand-name .en { font-size: 13px; letter-spacing: .16em; color: rgba(255,255,255,.9); }
.cc-brand-name .zh { font-size: 10px; letter-spacing: .12em; color: rgba(255,255,255,.45); font-weight: 400; }

.cc-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(.75rem, 2vw, 2rem);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .01em;
}
.cc-nav > a,
.cc-nav-group > a {
  color: rgba(255,255,255,.7);
  transition: color var(--dur-fast);
  padding: 4px 0;
}
.cc-nav > a:hover,
.cc-nav-group > a:hover,
.cc-nav [aria-current="page"] { color: var(--white); }

.cc-nav-group { position: relative; }
.cc-subnav {
  position: absolute;
  top: calc(100% + 12px);
  left: -16px;
  min-width: 200px;
  padding: 8px;
  background: rgba(8,15,11,.96);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(16px);
  opacity: 0; visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--dur-fast), transform var(--dur-fast), visibility var(--dur-fast);
}
.cc-nav-group:hover .cc-subnav,
.cc-nav-group:focus-within .cc-subnav {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.cc-subnav a {
  display: block; padding: 10px 16px;
  border-radius: var(--r-md);
  font-size: 13px; font-weight: 500;
  color: rgba(255,255,255,.65);
  transition: color var(--dur-fast), background var(--dur-fast);
}
.cc-subnav a:hover { color: var(--white); background: rgba(255,255,255,.07); }

.cc-actions { display: flex; align-items: center; gap: 16px; }

.cc-lang {
  display: flex;
  gap: 2px;
  background: rgba(255,255,255,.08);
  border-radius: var(--r-full);
  padding: 3px;
}
.cc-lang button {
  padding: 4px 12px;
  border-radius: var(--r-full);
  font-size: 12px; font-weight: 600; letter-spacing: .05em;
  color: rgba(255,255,255,.55);
  transition: all var(--dur-fast);
}
.cc-lang button[aria-pressed="true"] { background: rgba(255,255,255,.14); color: var(--white); }
.cc-lang button:hover { color: var(--white); }

.cc-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px; height: 40px;
  gap: 6px;
  border-radius: var(--r-md);
  transition: background var(--dur-fast);
}
.cc-menu:hover { background: rgba(255,255,255,.08); }
.cc-menu span {
  display: block; width: 22px; height: 1.5px;
  background: var(--white); border-radius: 2px;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur-fast);
  transform-origin: center;
}
.cc-header.is-open .cc-menu span:first-child { transform: rotate(45deg) translateY(5.25px); }
.cc-header.is-open .cc-menu span:last-child { transform: rotate(-45deg) translateY(-5.25px); }

/* Mobile overlay */
.cc-mobile-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 49;
  background: rgba(8,15,11,.97);
  backdrop-filter: blur(24px);
  padding: 100px var(--page-x) 3rem;
  flex-direction: column;
  overflow-y: auto;
}
.cc-mobile-overlay.is-open { display: flex; }
.cc-mobile-nav { flex: 1; display: flex; flex-direction: column; }
.cc-mobile-nav > * + * { border-top: 1px solid rgba(255,255,255,.05); }
.cc-mobile-link {
  display: block;
  color: var(--white);
  font-size: clamp(1.5rem, 6vw, 2.75rem);
  font-family: var(--font-serif);
  font-weight: 300;
  padding: .75rem 0;
}
.cc-mobile-group { padding: .75rem 0; }
.cc-mobile-group-label {
  display: block;
  color: var(--white);
  font-size: clamp(1.5rem, 6vw, 2.75rem);
  font-family: var(--font-serif);
  font-weight: 300;
  margin-bottom: .5rem;
}
.cc-mobile-sub { padding-left: 1.5rem; display: flex; flex-direction: column; gap: .25rem; }
.cc-mobile-sub a { font-size: var(--body); color: rgba(255,255,255,.5); padding: .3rem 0; display: block; }
.cc-mobile-footer {
  display: flex; gap: 1rem; align-items: center; justify-content: space-between;
  padding-top: 2rem; margin-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.cc-mobile-footer span { font-size: 12px; color: rgba(255,255,255,.3); }
.cc-mobile-lang { display: flex; gap: 8px; }
.cc-mobile-lang button { font-size: var(--small); color: rgba(255,255,255,.5); font-weight: 600; }
.cc-mobile-lang button[aria-pressed="true"] { color: var(--white); }

@media (max-width: 900px) { .cc-nav { display: none; } .cc-menu { display: flex; } }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: 14px 28px; border-radius: var(--r-full);
  font-size: var(--small); font-weight: 700; letter-spacing: .04em;
  transition: all var(--dur-fast) var(--ease-out);
  white-space: nowrap; cursor: pointer;
}
.btn-primary { background: var(--ember); color: var(--white); }
.btn-primary:hover { background: var(--ember-lt); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(196,74,16,.35); }
.btn-ghost { border: 1.5px solid rgba(255,255,255,.28); color: var(--white); }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }
.btn-ghost-dark { border: 1.5px solid rgba(8,15,11,.2); color: var(--ink); }
.btn-ghost-dark:hover { background: rgba(8,15,11,.06); border-color: rgba(8,15,11,.4); }
.btn-link {
  font-size: var(--small); font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: inherit; display: inline-flex; align-items: center; gap: 8px;
  opacity: .55; transition: opacity var(--dur-fast), gap var(--dur-fast);
  padding: 0;
}
.btn-link::after { content: '→'; }
.btn-link:hover { opacity: 1; gap: 12px; }

/* ============================================================
   HOME HERO
   ============================================================ */
.home-hero {
  position: relative;
  height: 100svh; min-height: 600px;
  display: grid; grid-template-rows: 1fr auto;
  overflow: hidden; background: var(--forest); color: var(--white);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 30%;
  animation: hero-zoom 18s ease-in-out infinite alternate;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(to right, rgba(8,15,11,.85) 35%, rgba(8,15,11,.35) 100%),
    linear-gradient(to top, rgba(8,15,11,.7) 0%, transparent 55%);
}
@keyframes hero-zoom {
  from { transform: scale(1); }
  to   { transform: scale(1.07); }
}
.hero-content {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 0 var(--page-x) clamp(3rem, 7vw, 6rem);
  max-width: min(860px, 62vw);
}
@media (max-width: 760px) { .hero-content { max-width: 100%; } }

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-full); font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.7);
  margin-bottom: 2rem; width: fit-content;
}
.hero-tag-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--ember);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.7); }
}
.hero-title {
  font-family: var(--font-serif);
  font-size: var(--h1); font-weight: 600;
  line-height: 1.1; letter-spacing: -.01em; margin-bottom: 1.5rem;
}
.hero-title em { font-style: normal; color: var(--ember-lt); }
.hero-subtitle {
  font-size: var(--lead); font-weight: 300; line-height: 1.7;
  color: rgba(255,255,255,.65); max-width: 540px; margin-bottom: 2.5rem;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-stats {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat {
  padding: clamp(1.25rem, 2.5vw, 2rem) var(--page-x);
  border-right: 1px solid rgba(255,255,255,.08);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-value {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.4rem); font-weight: 600;
  color: var(--white); display: block; line-height: 1.2; margin-bottom: 4px;
}
.hero-stat-label {
  font-size: var(--xs); font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: rgba(255,255,255,.38); display: block;
}

/* ============================================================
   MARQUEE BAND
   ============================================================ */
.marquee-band {
  overflow: hidden; background: var(--ember); padding: 14px 0; white-space: nowrap;
}
.marquee-track { display: inline-flex; animation: marquee 28s linear infinite; }
.marquee-track span {
  font-size: 12px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--white); padding: 0 3rem;
}
.marquee-sep { color: rgba(255,255,255,.4); margin-right: 3rem; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============================================================
   POSITIONING
   ============================================================ */
.positioning-section { padding-block: var(--section-y); background: var(--linen); }
.positioning-inner {
  max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x);
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 8rem); align-items: start;
}
.positioning-left { position: sticky; top: 100px; }
.positioning-left .eyebrow { margin-bottom: 1.5rem; }
.positioning-left h2 {
  font-family: var(--font-serif);
  font-size: var(--h2); font-weight: 600; line-height: 1.25; letter-spacing: -.01em;
}
.positioning-right p { font-size: var(--lead); line-height: 1.8; color: var(--fog); margin-bottom: 1.5rem; }
.positioning-right p:last-of-type { margin-bottom: 0; }
@media (max-width: 760px) {
  .positioning-inner { grid-template-columns: 1fr; gap: 2rem; }
  .positioning-left { position: static; }
}

/* ============================================================
   SOLUTIONS SECTION
   ============================================================ */
.solutions-section { background: var(--forest); color: var(--white); padding-block: var(--section-y); }
.solutions-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.solutions-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: clamp(3rem, 6vw, 5rem); flex-wrap: wrap; gap: 1.5rem;
}
.solutions-header .eyebrow { color: rgba(255,255,255,.3); }
.solutions-header h2 {
  font-family: var(--font-serif);
  font-size: var(--h2); font-weight: 600; line-height: 1.2; max-width: 640px;
}
.solutions-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.07); border-radius: var(--r-lg); overflow: hidden;
}
.solution-card {
  padding: clamp(2rem, 4vw, 3.5rem);
  background: rgba(255,255,255,.02);
  transition: background var(--dur) var(--ease-out);
  position: relative; overflow: hidden;
}
.solution-card::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--ember); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}
.solution-card:hover { background: rgba(255,255,255,.05); }
.solution-card:hover::before { transform: scaleX(1); }
.solution-num { font-size: var(--xs); font-weight: 700; letter-spacing: .2em; color: var(--ember); margin-bottom: 2rem; display: block; }
.solution-card h3 { font-family: var(--font-serif); font-size: var(--h3); font-weight: 600; line-height: 1.3; margin-bottom: 1rem; color: var(--white); }
.solution-card p { font-size: var(--body); line-height: 1.8; color: rgba(255,255,255,.55); }
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2rem; }
.solution-tag {
  padding: 5px 12px; border-radius: var(--r-full);
  border: 1px solid rgba(255,255,255,.12);
  font-size: 11px; font-weight: 600; letter-spacing: .06em;
  color: rgba(255,255,255,.4);
}
@media (max-width: 900px) { .solutions-grid { grid-template-columns: 1fr; } }

/* ============================================================
   CASES SECTION
   ============================================================ */
.cases-section { padding-block: var(--section-y); background: var(--cream); }
.cases-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.cases-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: clamp(2.5rem, 5vw, 4rem); flex-wrap: wrap; gap: 1.5rem;
}
.cases-header h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.2; max-width: 560px; }
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.case-card {
  border-radius: var(--r-xl); overflow: hidden; position: relative;
  background: var(--forest); color: var(--white); display: flex; flex-direction: column;
  min-height: clamp(380px, 50vw, 560px);
}
.case-card-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; transition: transform var(--dur-slow) var(--ease-out);
}
.case-card:hover .case-card-img { transform: scale(1.04); }
.case-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8,15,11,.88) 0%, rgba(8,15,11,.22) 60%, transparent 100%);
}
.case-card-body {
  position: relative; z-index: 1; padding: clamp(1.5rem, 3vw, 2.5rem); margin-top: auto;
}
.case-badge {
  display: inline-block; padding: 5px 14px; border-radius: var(--r-full);
  border: 1px solid rgba(255,255,255,.22); font-size: 11px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.75);
  margin-bottom: 1rem; backdrop-filter: blur(8px); background: rgba(255,255,255,.06);
}
.case-card h3 { font-family: var(--font-serif); font-size: var(--h3); font-weight: 600; line-height: 1.3; margin-bottom: .75rem; }
.case-card p { font-size: var(--small); line-height: 1.7; color: rgba(255,255,255,.6); }
@media (max-width: 720px) { .cases-grid { grid-template-columns: 1fr; } .case-card { min-height: 320px; } }

/* ============================================================
   PRODUCTS SECTION
   ============================================================ */
.products-section { padding-block: var(--section-y); background: var(--linen); }
.products-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.products-header {
  display: flex; justify-content: space-between; align-items: flex-end;
  margin-bottom: clamp(2.5rem, 5vw, 4rem); flex-wrap: wrap; gap: 1.5rem;
}
.products-header h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.2; max-width: 480px; }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.product-tile {
  border-radius: var(--r-lg); overflow: hidden; aspect-ratio: 3/4;
  position: relative; background: var(--moss); display: block; text-decoration: none;
}
.product-tile-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; transition: transform var(--dur-slow) var(--ease-out);
}
.product-tile:hover .product-tile-img { transform: scale(1.06); }
.product-tile::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8,15,11,.78) 0%, transparent 60%);
}
.product-tile-name {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 1;
  padding: 1.25rem 1rem;
  font-family: var(--font-serif); font-size: 1.05rem; font-weight: 600; color: var(--white);
}
@media (max-width: 860px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }

/* ============================================================
   PARTNER BAND (ToB entry on ToC home)
   ============================================================ */
.partner-band {
  padding-block: clamp(3.5rem, 6vw, 6rem);
  background: var(--sage);
  color: var(--white);
}
.partner-band .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.partner-inner {
  display: grid; grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 5rem); align-items: center;
}
.partner-text .eyebrow { color: rgba(255,255,255,.4); margin-bottom: 1.25rem; }
.partner-text h2 { font-family: var(--font-serif); font-size: var(--h3); font-weight: 600; line-height: 1.25; margin-bottom: 1rem; }
.partner-text p { font-size: var(--body); line-height: 1.8; color: rgba(255,255,255,.6); }
.partner-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
@media (max-width: 760px) {
  .partner-inner { grid-template-columns: 1fr; }
  .partner-actions { flex-direction: row; flex-wrap: wrap; }
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section { padding-block: var(--section-y); background: var(--forest); color: var(--white); text-align: center; }
.cta-section .container { max-width: 760px; margin-inline: auto; padding-inline: var(--page-x); }
.cta-section .eyebrow { color: rgba(255,255,255,.3); margin-bottom: 1.5rem; }
.cta-section h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; letter-spacing: -.01em; margin-bottom: 1rem; }
.cta-section p { font-size: var(--lead); color: rgba(255,255,255,.55); line-height: 1.7; margin-bottom: 2.5rem; }
.cta-buttons { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* ============================================================
   FOOTER
   ============================================================ */
.cc-footer { background: var(--moss); color: var(--white); padding-block: clamp(3rem, 6vw, 5rem) 2rem; }
.cc-footer .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: clamp(2rem, 5vw, 5rem);
  padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,.08); margin-bottom: 2rem;
}
.footer-brand-en { font-size: 15px; font-weight: 800; letter-spacing: .14em; color: var(--white); }
.footer-tagline { font-size: var(--small); line-height: 1.7; color: rgba(255,255,255,.38); margin-top: 1rem; max-width: 280px; }
.footer-col h4 { font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.3); margin-bottom: 1.25rem; }
.footer-col ul { display: flex; flex-direction: column; gap: .625rem; }
.footer-col li a { font-size: var(--small); color: rgba(255,255,255,.52); transition: color var(--dur-fast); }
.footer-col li a:hover { color: var(--white); }
.footer-contact-item { margin-bottom: .875rem; }
.footer-contact-label { display: block; font-size: 10px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: rgba(255,255,255,.25); margin-bottom: 3px; }
.footer-contact-value { font-size: var(--small); color: rgba(255,255,255,.58); }
.footer-contact-value a { color: rgba(255,255,255,.58); transition: color var(--dur-fast); }
.footer-contact-value a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-legal { font-size: 12px; color: rgba(255,255,255,.22); }
.footer-version { font-size: 11px; font-family: var(--font-mono); color: rgba(255,255,255,.18); letter-spacing: .05em; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }

/* ============================================================
   PAGE HEROES (inner pages)
   ============================================================ */
.page-hero {
  position: relative;
  padding-top: calc(72px + clamp(3.5rem, 8vw, 7rem));
  padding-bottom: clamp(4rem, 7vw, 6rem);
  padding-inline: var(--page-x);
  background: var(--forest); color: var(--white); overflow: hidden;
}
.page-hero-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.page-hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .22; }
.page-hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--forest) 0%, rgba(8,15,11,.6) 80%, transparent 100%);
}
.page-hero-content { position: relative; z-index: 1; max-width: var(--max-w); margin-inline: auto; }
.page-hero .eyebrow { color: rgba(255,255,255,.38); margin-bottom: 1.5rem; }
.page-hero h1 {
  font-family: var(--font-serif); font-size: var(--h1); font-weight: 600;
  line-height: 1.15; letter-spacing: -.01em; max-width: 760px; margin-bottom: 1.5rem;
}
.page-hero p { font-size: var(--lead); color: rgba(255,255,255,.58); line-height: 1.75; max-width: 560px; }

/* ============================================================
   ABOUT PAGE SECTIONS
   ============================================================ */
.about-intro { padding-block: var(--section-y); background: var(--linen); }
.about-intro .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.about-intro-grid {
  display: grid; grid-template-columns: 5fr 7fr;
  gap: clamp(3rem, 7vw, 8rem); align-items: start;
}
.about-sticky { position: sticky; top: 100px; }
.about-sticky .eyebrow { margin-bottom: 1.5rem; }
.about-sticky h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; }
.about-body p { font-size: var(--lead); line-height: 1.8; color: var(--fog); margin-bottom: 1.5rem; }
.about-body p:last-child { margin-bottom: 0; }
@media (max-width: 760px) { .about-intro-grid { grid-template-columns: 1fr; } .about-sticky { position: static; } }

.org-section { padding-block: var(--section-y); background: var(--cream); }
.org-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.org-section-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.org-section-head .eyebrow { margin-bottom: 1rem; }
.org-section-head h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.2; }
.org-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(0,0,0,.06); border-radius: var(--r-lg); overflow: hidden;
}
.org-card { padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--cream); }
.org-num { font-size: 11px; font-weight: 700; letter-spacing: .2em; color: var(--ember); margin-bottom: 1.25rem; display: block; }
.org-card h3 { font-family: var(--font-serif); font-size: var(--h4); font-weight: 600; margin-bottom: .75rem; }
.org-card p { font-size: var(--small); color: var(--fog); line-height: 1.7; }
@media (max-width: 860px) { .org-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .org-grid { grid-template-columns: 1fr; } }

.honors-section { padding-block: var(--section-y); background: var(--linen); }
.honors-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.honors-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.honors-head .eyebrow { margin-bottom: 1rem; }
.honors-head h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.2; margin-bottom: .75rem; }
.honors-head p { font-size: var(--lead); color: var(--fog); max-width: 560px; }
.honors-timeline {
  display: flex; flex-direction: column; gap: 0;
  border-left: 2px solid rgba(0,0,0,.08);
  padding-left: clamp(1.5rem, 3vw, 3rem);
}
.honor-year { padding-bottom: clamp(2rem, 4vw, 3.5rem); position: relative; }
.honor-year::before {
  content: ''; position: absolute;
  left: calc(-1 * clamp(1.5rem, 3vw, 3rem) - 5px); top: 10px;
  width: 10px; height: 10px; border-radius: 50%; background: var(--ember);
}
.honor-year time {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 300; line-height: 1;
  color: var(--sand); display: block; margin-bottom: .75rem;
}
.honor-year h3 { font-size: var(--h4); font-weight: 700; margin-bottom: 1rem; }
.honor-year p { font-size: var(--body); color: var(--fog); line-height: 1.7; padding: .6rem 0; border-bottom: 1px solid rgba(0,0,0,.06); }
.honor-year p:last-child { border-bottom: none; }

.careers-section { padding-block: var(--section-y); background: var(--sage); color: var(--white); }
.careers-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.careers-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 6vw, 8rem); align-items: center; }
.careers-text .eyebrow { color: rgba(255,255,255,.35); margin-bottom: 1.5rem; }
.careers-text h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; margin-bottom: 1.25rem; }
.careers-text p { font-size: var(--lead); color: rgba(255,255,255,.6); line-height: 1.75; margin-bottom: 2rem; }
.careers-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-xl); padding: clamp(2rem, 4vw, 3rem);
}
.careers-card-tag { font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.35); margin-bottom: 1rem; display: block; }
.careers-card h3 { font-family: var(--font-serif); font-size: var(--h3); font-weight: 600; margin-bottom: .75rem; }
.careers-card p { font-size: var(--small); color: rgba(255,255,255,.55); margin-bottom: 1.5rem; line-height: 1.7; }
@media (max-width: 760px) { .careers-inner { grid-template-columns: 1fr; } }

/* ============================================================
   SOLUTIONS PAGE
   ============================================================ */
.method-chain-section { padding-block: var(--section-y); background: var(--linen); }
.method-chain-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.method-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.method-head .eyebrow { margin-bottom: 1rem; }
.method-head h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.2; }
.method-chain { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.chain-card {
  padding: 2rem; background: var(--white); border-radius: var(--r-lg);
  border: 1px solid rgba(0,0,0,.06); position: relative;
}
.chain-card:not(:last-child)::after {
  content: '→'; position: absolute; right: -1.1rem; top: 50%;
  transform: translateY(-50%); color: var(--fog-lt); font-size: 1.25rem; z-index: 1;
}
.chain-num { font-size: 11px; font-weight: 700; letter-spacing: .2em; color: var(--ember); margin-bottom: 1rem; display: block; }
.chain-card h3 { font-weight: 700; margin-bottom: .5rem; }
.chain-card p { font-size: var(--small); color: var(--fog); line-height: 1.7; }
@media (max-width: 860px) { .method-chain { grid-template-columns: repeat(2, 1fr); } .chain-card:not(:last-child)::after { display: none; } }
@media (max-width: 480px) { .method-chain { grid-template-columns: 1fr; } }

.solution-detail-section { padding-block: var(--section-y); }
.solution-detail-section:nth-child(odd) { background: var(--linen); }
.solution-detail-section:nth-child(even) { background: var(--cream); }
.solution-detail-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.solution-detail-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(3rem, 7vw, 8rem); align-items: center; }
.solution-detail-grid.reverse { direction: rtl; }
.solution-detail-grid.reverse > * { direction: ltr; }
.solution-detail-img { border-radius: var(--r-xl); overflow: hidden; aspect-ratio: 4/3; }
.solution-detail-img img { width: 100%; height: 100%; object-fit: cover; }
.solution-detail-text .eyebrow { color: var(--ember); margin-bottom: 1rem; }
.solution-detail-text h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; margin-bottom: 1.25rem; }
.solution-detail-text p { font-size: var(--lead); color: var(--fog); line-height: 1.8; margin-bottom: 1rem; }
.solution-features { margin-top: 2rem; display: flex; flex-direction: column; gap: .75rem; }
.solution-feature { display: flex; gap: 12px; align-items: flex-start; font-size: var(--small); color: var(--fog); line-height: 1.6; }
.solution-feature::before { content: '✓'; color: var(--ember); font-weight: 700; flex-shrink: 0; margin-top: .1rem; }
@media (max-width: 760px) { .solution-detail-grid { grid-template-columns: 1fr; } .solution-detail-grid.reverse { direction: ltr; } }

/* ============================================================
   CASES PAGE
   ============================================================ */
.case-editorial { padding-block: var(--section-y); }
.case-editorial:nth-child(odd) { background: var(--linen); }
.case-editorial:nth-child(even) { background: var(--forest); color: var(--white); }
.case-editorial .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.case-editorial-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 7vw, 8rem); align-items: center; }
.case-editorial:nth-child(even) .case-editorial-grid .case-editorial-img { order: 2; }
.case-editorial-img { border-radius: var(--r-xl); overflow: hidden; aspect-ratio: 1/1; }
.case-editorial-img img { width: 100%; height: 100%; object-fit: cover; }
.case-editorial-content .eyebrow { margin-bottom: 1rem; }
.case-editorial:nth-child(even) .case-editorial-content .eyebrow { color: rgba(255,255,255,.32); }
.case-editorial-content h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; margin-bottom: 1.25rem; }
.case-editorial-content p { font-size: var(--lead); line-height: 1.8; margin-bottom: 1rem; }
.case-editorial:nth-child(odd) .case-editorial-content p { color: var(--fog); }
.case-editorial:nth-child(even) .case-editorial-content p { color: rgba(255,255,255,.58); }
.case-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
  margin-top: 2.5rem; padding-top: 2.5rem; border-top: 1px solid rgba(0,0,0,.08);
}
.case-editorial:nth-child(even) .case-metrics { border-color: rgba(255,255,255,.1); }
.case-metric-value { font-family: var(--font-serif); font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 600; display: block; line-height: 1; margin-bottom: .25rem; }
.case-metric-label { font-size: var(--xs); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; opacity: .4; }
@media (max-width: 760px) { .case-editorial-grid { grid-template-columns: 1fr; } .case-editorial:nth-child(even) .case-editorial-grid .case-editorial-img { order: 0; } }

/* ============================================================
   PRODUCTS PAGE
   ============================================================ */
.product-page-section { padding-block: var(--section-y); }
.product-page-section:nth-child(odd) { background: var(--linen); }
.product-page-section:nth-child(even) { background: var(--cream); }
.product-page-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.product-page-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 7vw, 8rem); align-items: center; }
.product-page-grid.reverse .product-page-img { order: 2; }
.product-page-img { border-radius: var(--r-xl); overflow: hidden; aspect-ratio: 4/3; }
.product-page-img img { width: 100%; height: 100%; object-fit: cover; }
.product-page-text .eyebrow { color: var(--ember); margin-bottom: 1rem; }
.product-page-text h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; margin-bottom: 1.25rem; }
.product-page-text p { font-size: var(--lead); color: var(--fog); line-height: 1.8; margin-bottom: 1rem; }
.product-page-text .btn { margin-top: 1.5rem; }
@media (max-width: 760px) { .product-page-grid { grid-template-columns: 1fr; } .product-page-grid.reverse .product-page-img { order: 0; } }

/* Cloud Tree */
.ct-how { padding-block: var(--section-y); background: var(--cream); }
.ct-how .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.ct-how-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.ct-how-head .eyebrow { margin-bottom: 1rem; }
.ct-how-head h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; }
.how-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.how-step { padding: 2rem; background: var(--white); border-radius: var(--r-lg); border: 1px solid rgba(0,0,0,.06); }
.step-num { font-size: 11px; font-weight: 700; letter-spacing: .2em; color: var(--ember); margin-bottom: 1rem; display: block; }
.how-step h3 { font-weight: 700; margin-bottom: .5rem; }
.how-step p { font-size: var(--small); color: var(--fog); line-height: 1.7; }
@media (max-width: 860px) { .how-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .how-steps { grid-template-columns: 1fr; } }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-section { padding-block: var(--section-y); background: var(--linen); }
.contact-section .container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--page-x); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 7vw, 8rem); align-items: start; }
.contact-info h2 { font-family: var(--font-serif); font-size: var(--h2); font-weight: 600; line-height: 1.25; margin-bottom: 1.25rem; }
.contact-info p { font-size: var(--lead); color: var(--fog); line-height: 1.8; margin-bottom: 2.5rem; }
.contact-items { display: flex; flex-direction: column; gap: 2rem; }
.contact-label { display: block; font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--fog-lt); margin-bottom: 4px; }
.contact-value { font-size: var(--body); color: var(--ink); font-weight: 500; }
.contact-value a { color: var(--ember); transition: opacity var(--dur-fast); }
.contact-value a:hover { opacity: .7; }
.contact-form-card {
  background: var(--white); border-radius: var(--r-xl); padding: clamp(2rem, 4vw, 3rem);
  border: 1px solid rgba(0,0,0,.06); box-shadow: var(--shadow-md);
}
.contact-form-card h3 { font-family: var(--font-serif); font-size: var(--h3); font-weight: 600; margin-bottom: .5rem; }
.contact-form-card > p { font-size: var(--small); color: var(--fog); margin-bottom: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: var(--small); font-weight: 600; margin-bottom: .5rem; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 12px 16px; border: 1.5px solid rgba(0,0,0,.1);
  border-radius: var(--r-md); font-size: var(--body); color: var(--ink);
  background: var(--linen); transition: border-color var(--dur-fast), background var(--dur-fast);
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { outline: none; border-color: var(--ember); background: var(--white); }
.form-group textarea { resize: vertical; min-height: 120px; }
.wechat-block {
  margin-top: 2.5rem; padding-top: 2.5rem; border-top: 1px solid rgba(0,0,0,.06);
  display: flex; align-items: center; gap: 1.5rem;
}
.wechat-qr { width: 88px; height: 88px; border-radius: var(--r-md); overflow: hidden; flex-shrink: 0; }
.wechat-qr img { width: 100%; height: 100%; object-fit: cover; }
.wechat-text h4 { font-weight: 700; margin-bottom: .25rem; }
.wechat-text p { font-size: var(--small); color: var(--fog); }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
[data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }

/* ============================================================
   RESPONSIVE FINE-TUNING
   ============================================================ */
@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,.08); }
  .hero-stat:last-child { border-bottom: none; }
  .btn { padding: 12px 22px; }
  .cta-buttons { flex-direction: column; align-items: center; }
}

/* ===== FIELD GALLERY (about) ===== */
.field-section { padding-block: var(--section-y); }
.field-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2.5rem; }
.field-card { position: relative; margin: 0; aspect-ratio: 4 / 3; overflow: hidden; border-radius: 14px; box-shadow: 0 10px 30px rgba(8,15,11,.12); }
.field-card img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s var(--ease, ease); }
.field-card:hover img { transform: scale(1.05); }
.field-card figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 1.4rem .85rem .7rem; background: linear-gradient(to top, rgba(8,15,11,.86), transparent); color: #fff; font-size: .82rem; font-weight: 800; letter-spacing: .01em; }
@media (max-width: 760px) { .field-gallery { grid-template-columns: repeat(2, 1fr); gap: .7rem; } }